CVE-2023-4255

Description

An out-of-bounds write issue has been discovered in the backspace handling of the checkType() function in etc.c within the W3M application. This vulnerability is triggered by supplying a specially crafted HTML file to the w3m binary. Exploitation of this flaw could lead to application crashes, resulting in a denial of service condition.

References

https://lists.fedoraproject.org/archives/list/[email protected]/message/TODROGVCWZ435HQIZE6ARQC5LPQLIA5C/

https://lists.fedoraproject.org/archives/list/[email protected]/message/MKFZQUK7FPWWJQYICDZZ4YWIPUPQ2D3R/

https://lists.fedoraproject.org/archives/list/[email protected]/message/AULOBQJLXE2KCT5UVQMKGEFL4GFIAOED/

https://github.com/tats/w3m/pull/273

https://github.com/tats/w3m/commit/edc602651c506aeeb60544b55534dd1722a340d3

https://bugzilla.redhat.com/show_bug.cgi?id=2255207

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3